Numerical analysis of reinforced concrete beam subject to pitting corrosion

This paper presents a numerical study about the effects of chloride-induced corrosion on the service life of structures. A two-dimensional geometrically nonlinear mechanical model based on Finite Element Method (FEM) was developed for reinforced concrete structures. The corrosion initiation stage wa...

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Detalles Bibliográficos
Autores: Ramos, Éverton Souza, Carrazedo, Rogério
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:Brasil
Institución:Associação Nacional de Tecnologia do Ambiente Construído (ANTAC)
Repositorio:Ambiente construído (Online)
Idioma:portugués
OAI Identifier:oai:seer.ufrgs.br:article/111660
Acceso en línea:https://seer.ufrgs.br/index.php/ambienteconstruido/article/view/111660
Access Level:acceso abierto
Palabra clave:Reinforced Concrete Structures
Chloride-induced Corrosion
Pitting Corrosion
Service Life
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spelling Numerical analysis of reinforced concrete beam subject to pitting corrosionReinforced Concrete StructuresChloride-induced CorrosionPitting CorrosionService LifeThis paper presents a numerical study about the effects of chloride-induced corrosion on the service life of structures. A two-dimensional geometrically nonlinear mechanical model based on Finite Element Method (FEM) was developed for reinforced concrete structures. The corrosion initiation stage was evaluated by Fick's diffusion laws. The corrosion propagation was carried out by deterministic models based on Faraday's law. Pitting corrosion was simulated in the reinforcements by pit elements, distributed longitudinally on the steel rebars, which degrade the physical properties over time. The service life was determined by the crack width. Two parametric analyses were performed. In the first analysis, five models were created with a variable cover thickness and water/cement ratio (w/c). In the second analysis, the reduction in yield stress due to corrosion was considered. The results showed that the concrete cover thickness and the w/c ratio significantly influence the service life. The reduction of the cover thickness from 30 mm to 25 mm resulted in 21.26% reduction in service life, while the increase in the w/c ratio from 0.50 to 0.55 caused 32.98% reduction in service life of the structural element analyzed.ANTAC – Associação Nacional de Tecnologia do Ambiente Construído2021-11-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttps://seer.ufrgs.br/index.php/ambienteconstruido/article/view/111660Ambiente Construído; Vol. 22 No. 1 (2022); 201-222Ambiente Construído; Vol. 22 Núm. 1 (2022); 201-222Ambiente Construído; v. 22 n. 1 (2022); 201-2221678-86211415-8876reponame:Ambiente construído (Online)instname:Associação Nacional de Tecnologia do Ambiente Construído (ANTAC)instacron:ANTACporhttps://seer.ufrgs.br/index.php/ambienteconstruido/article/view/111660/65046Copyright (c) 2021 Ambiente Construídoinfo:eu-repo/semantics/openAccessRamos, Éverton SouzaCarrazedo, Rogério2023-01-09T20:05:38Zoai:seer.ufrgs.br:article/111660Revistahttps://seer.ufrgs.br/ambienteconstruidoPUBhttps://seer.ufrgs.br/index.php/ambienteconstruido/oai||ambienteconstruido@ufrgs.br1678-86211415-8876opendoar:2023-01-09T20:05:38Ambiente construído (Online) - Associação Nacional de Tecnologia do Ambiente Construído (ANTAC)false
dc.title.none.fl_str_mv Numerical analysis of reinforced concrete beam subject to pitting corrosion
title Numerical analysis of reinforced concrete beam subject to pitting corrosion
spellingShingle Numerical analysis of reinforced concrete beam subject to pitting corrosion
Ramos, Éverton Souza
Reinforced Concrete Structures
Chloride-induced Corrosion
Pitting Corrosion
Service Life
title_short Numerical analysis of reinforced concrete beam subject to pitting corrosion
title_full Numerical analysis of reinforced concrete beam subject to pitting corrosion
title_fullStr Numerical analysis of reinforced concrete beam subject to pitting corrosion
title_full_unstemmed Numerical analysis of reinforced concrete beam subject to pitting corrosion
title_sort Numerical analysis of reinforced concrete beam subject to pitting corrosion
dc.creator.none.fl_str_mv Ramos, Éverton Souza
Carrazedo, Rogério
author Ramos, Éverton Souza
author_facet Ramos, Éverton Souza
Carrazedo, Rogério
author_role author
author2 Carrazedo, Rogério
author2_role author
dc.subject.por.fl_str_mv Reinforced Concrete Structures
Chloride-induced Corrosion
Pitting Corrosion
Service Life
topic Reinforced Concrete Structures
Chloride-induced Corrosion
Pitting Corrosion
Service Life
description This paper presents a numerical study about the effects of chloride-induced corrosion on the service life of structures. A two-dimensional geometrically nonlinear mechanical model based on Finite Element Method (FEM) was developed for reinforced concrete structures. The corrosion initiation stage was evaluated by Fick's diffusion laws. The corrosion propagation was carried out by deterministic models based on Faraday's law. Pitting corrosion was simulated in the reinforcements by pit elements, distributed longitudinally on the steel rebars, which degrade the physical properties over time. The service life was determined by the crack width. Two parametric analyses were performed. In the first analysis, five models were created with a variable cover thickness and water/cement ratio (w/c). In the second analysis, the reduction in yield stress due to corrosion was considered. The results showed that the concrete cover thickness and the w/c ratio significantly influence the service life. The reduction of the cover thickness from 30 mm to 25 mm resulted in 21.26% reduction in service life, while the increase in the w/c ratio from 0.50 to 0.55 caused 32.98% reduction in service life of the structural element analyzed.
publishDate 2021
dc.date.none.fl_str_mv 2021-11-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.ufrgs.br/index.php/ambienteconstruido/article/view/111660
url https://seer.ufrgs.br/index.php/ambienteconstruido/article/view/111660
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.ufrgs.br/index.php/ambienteconstruido/article/view/111660/65046
dc.rights.driver.fl_str_mv Copyright (c) 2021 Ambiente Construído
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2021 Ambiente Construído
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv ANTAC – Associação Nacional de Tecnologia do Ambiente Construído
publisher.none.fl_str_mv ANTAC – Associação Nacional de Tecnologia do Ambiente Construído
dc.source.none.fl_str_mv Ambiente Construído; Vol. 22 No. 1 (2022); 201-222
Ambiente Construído; Vol. 22 Núm. 1 (2022); 201-222
Ambiente Construído; v. 22 n. 1 (2022); 201-222
1678-8621
1415-8876
reponame:Ambiente construído (Online)
instname:Associação Nacional de Tecnologia do Ambiente Construído (ANTAC)
instacron:ANTAC
instname_str Associação Nacional de Tecnologia do Ambiente Construído (ANTAC)
instacron_str ANTAC
institution ANTAC
reponame_str Ambiente construído (Online)
collection Ambiente construído (Online)
repository.name.fl_str_mv Ambiente construído (Online) - Associação Nacional de Tecnologia do Ambiente Construído (ANTAC)
repository.mail.fl_str_mv ||ambienteconstruido@ufrgs.br
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score 15,300724

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